::root{
    --colorTitulos:blue;
    //--colorContenido:black;
    //
}
.chico{
    width:60px; 
}
.pequeno{
    width:40px; 
}
.normal{
    width:100px; 
}
.medio{
    width:150px; 
}
.grande{
    width:200px; 
}
.extragrande{
    width:280px; 
}
.alinearIzquierda{
    float: left;
}
.alinearDerecha{
    float:right;
}
.tituloFormulario{
    font-style: italic;
    padding: 10px;
    text-align: center;
}
.subTitulo{
    font-style: italic;
}
.negrilla{
    font-weight: bold;
}
.contenedor50{
    background: none repeat scroll 0 0 green;
    border: medium solid;
    float: left;
    margin: 5px;
    padding: 5px;
    width: 45%;
}
.contenedor20{
    background: none repeat scroll 0 0 green;
    border: medium solid;
    float: left;
    margin: 5px;
    padding: 5px;
    width: 15%;
}
.contenedor80{
    background: none repeat scroll 0 0 green;
    border: medium solid;
    float: left;
    margin: 5px;
    padding: 5px;
    width: 75%;
}
.contenedor30{
    background: none repeat scroll 0 0 green;
    border: medium solid;
    float: left;
    margin: 5px;
    padding: 5px;
    width: 25%;
}
.contenedor70{
    background: none repeat scroll 0 0 green;
    border: medium solid;
    float: left;
    margin: 5px;
    padding: 5px;
    width: 65%;
}
.esquinasRedondeadas{
    border-radius: 7px;
}




.contenedor{
    width: 600px;
    height: 800px;
    background: blue;
}